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<div class="title">CyclicBufferController.cpp</div>  </div>
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<a href="_cyclic_buffer_controller_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">//  CyclicBufferController.cpp</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//  Implementation of the Class CyclicBufferController</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">//  Created on:      11-7��-2018 14:33:52</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//  Original author: JHX</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#include &quot;../include/CyclicBufferController.h&quot;</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &quot;../include/debug.h&quot;</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;assert.h&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#a2db3ad4287240ffc52c0536c2589b9d1">   16</a></span>&#160;<a class="code" href="class_cyclic_buffer_controller.html#a2db3ad4287240ffc52c0536c2589b9d1">CyclicBufferController::CyclicBufferController</a>()</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;{</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;        <span class="comment">//m_dataBuf = NULL;</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;        <a class="code" href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">m_readPtr</a> = NULL;</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;        <a class="code" href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">m_writePtr</a> = NULL;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;        <a class="code" href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">m_startPtr</a> = NULL;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;        <a class="code" href="class_cyclic_buffer_controller.html#a79cbb344fe0a76309520376cc382d509">m_endPtr</a> = NULL;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;        memset(<a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a>, 0, <span class="keyword">sizeof</span>(<a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a>));</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;        memset(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>, 0, <span class="keyword">sizeof</span>(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>));</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;}</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#acd7665ef52411a62d47cdde4639052b1">   27</a></span>&#160;<a class="code" href="class_cyclic_buffer_controller.html#acd7665ef52411a62d47cdde4639052b1">CyclicBufferController::~CyclicBufferController</a>()</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;{</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;}</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#a419f448d18c442430f798e0408e3894b">   38</a></span>&#160;<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_cyclic_buffer_controller.html#a419f448d18c442430f798e0408e3894b">CyclicBufferController::getWritableSize</a>()</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;{</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> writableSize = <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a> - </div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;                        (<a class="code" href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">m_writePtr</a> - <a class="code" href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">m_readPtr</a> + <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a>) % <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a>;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        <span class="keywordflow">return</span> writableSize;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;}</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#a7e151b044dff0a4f4cedc0858c6fee2e">   54</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_cyclic_buffer_controller.html#a7e151b044dff0a4f4cedc0858c6fee2e">CyclicBufferController::initializeDataBuf</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bufSize)</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;{</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        <span class="comment">//m_cycBufSize = bufSize;</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a> = 80960;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">//      std::cout &lt;&lt; &quot;************m_cycBufSize: &quot; &lt;&lt; m_cycBufSize &lt;&lt; std::endl;</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        <span class="comment">//m_dataBuf = (char*)malloc(bufSize);</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        <span class="keywordflow">if</span>(<a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a>)</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        {</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;                <a class="code" href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">m_startPtr</a> = <a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a>;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;                <span class="comment">//m_endPtr = m_dataBuf + bufSize;</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;                <a class="code" href="class_cyclic_buffer_controller.html#a79cbb344fe0a76309520376cc382d509">m_endPtr</a> = <a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a> + 80960;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;                <a class="code" href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">m_writePtr</a> = <a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a>;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;                <a class="code" href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">m_readPtr</a> = <a class="code" href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">m_dataBuf</a>;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">//              printf(&quot;m_startPtr: %p\n&quot;, m_startPtr);</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">//              printf(&quot;m_readPtr: %p\n&quot;, m_readPtr);</span></div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">//              printf(&quot;m_endPtr: %p\n&quot;, m_endPtr);</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        }<span class="keywordflow">else</span>{</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        }</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        </div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;}</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="keywordtype">bool</span> </div><div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#add639f0a5fe5c958ae8b08b5611b1c4c">   89</a></span>&#160;<a class="code" href="class_cyclic_buffer_controller.html#add639f0a5fe5c958ae8b08b5611b1c4c">CyclicBufferController::writeData</a>(</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span>* writedData,</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> dataSize)</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;{</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <a class="code" href="_device_manager__server_8cpp.html#aba4334f5f818d11c0a025ccac667678a">assert</a>(writedData);</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> needWrittenDataSize = dataSize + 2;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        <a class="code" href="debug_8h.html#a4036580c4cea6cf404647d18f2fe3452">DEBUG</a>(1, <a class="code" href="class_cyclic_buffer_controller.html#add639f0a5fe5c958ae8b08b5611b1c4c">CyclicBufferController::writeData</a>, <span class="stringliteral">&quot;dataSize: &quot;</span> &lt;&lt; dataSize)</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        <span class="comment">//of datas have been witten to buffer.</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> writableSize =</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;                        <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a> - (<a class="code" href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">m_writePtr</a> - <a class="code" href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">m_readPtr</a> + <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a>) % <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a>;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        <a class="code" href="debug_8h.html#a4036580c4cea6cf404647d18f2fe3452">DEBUG</a>(3, <a class="code" href="class_cyclic_buffer_controller.html#add639f0a5fe5c958ae8b08b5611b1c4c">CyclicBufferController::writeData</a>, <span class="stringliteral">&quot;writableSize: &quot;</span> &lt;&lt; writableSize)</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <a class="code" href="debug_8h.html#a4036580c4cea6cf404647d18f2fe3452">DEBUG</a>(3, <a class="code" href="class_cyclic_buffer_controller.html#add639f0a5fe5c958ae8b08b5611b1c4c">CyclicBufferController::writeData</a>, <span class="stringliteral">&quot;needWrittenDataSize: &quot;</span> &lt;&lt; needWrittenDataSize)</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        <span class="keywordflow">if</span>(writableSize &lt; needWrittenDataSize)</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        {</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        }</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        </div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="keywordflow">if</span>(dataSize &lt; 1)</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        {</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;invalid data&quot;</span> &lt;&lt; std::endl;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        }</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rearLen = <a class="code" href="class_cyclic_buffer_controller.html#a79cbb344fe0a76309520376cc382d509">m_endPtr</a> - <a class="code" href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">m_writePtr</a>;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="keywordflow">if</span> (rearLen &lt;= 2) {</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                memcpy(m_writePtr, &amp;dataSize, rearLen);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;                m_writePtr = <a class="code" href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">m_startPtr</a>;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;                memcpy(m_writePtr, (<span class="keywordtype">char</span>*)(&amp;dataSize) + rearLen, 2 - rearLen);</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                m_writePtr += (2 - rearLen);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                memcpy(m_writePtr, writedData, dataSize);</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                m_writePtr += dataSize;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((2 &lt; rearLen) &amp;&amp; (rearLen &lt; needWrittenDataSize)) {</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                memcpy(m_writePtr, &amp;dataSize, 2);</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;                memcpy(m_writePtr + 2, writedData, rearLen - 2);</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;                m_writePtr = <a class="code" href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">m_startPtr</a>;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;                memcpy(m_writePtr, writedData + rearLen - 2, dataSize - (rearLen - 2));</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                m_writePtr += (dataSize - (rearLen - 2));</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (rearLen &gt;= needWrittenDataSize) {</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;                memcpy(m_writePtr, &amp;dataSize, 2);</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                memcpy(m_writePtr + 2, writedData, dataSize);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                m_writePtr += needWrittenDataSize;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        }</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;}</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#a6008ed913714ccd961bd8206d152cae2">  141</a></span>&#160;<span class="keywordtype">char</span>* <a class="code" href="class_cyclic_buffer_controller.html#a6008ed913714ccd961bd8206d152cae2">CyclicBufferController::readData</a>()</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;{</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        <a class="code" href="debug_8h.html#a4036580c4cea6cf404647d18f2fe3452">DEBUG</a>(1, <a class="code" href="class_cyclic_buffer_controller.html#a6008ed913714ccd961bd8206d152cae2">CyclicBufferController::readData</a>, <span class="stringliteral">&quot;enter in...&quot;</span>)</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> readableSize =</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;                        (<a class="code" href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">m_writePtr</a> - <a class="code" href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">m_readPtr</a> + <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a>) % <a class="code" href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">m_cycBufSize</a>;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        <span class="keywordflow">if</span>( readableSize &lt;= 2 )</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        {</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        }</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        </div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        memset(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>, 0, <span class="keyword">sizeof</span>(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>));</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rearLen = <a class="code" href="class_cyclic_buffer_controller.html#a79cbb344fe0a76309520376cc382d509">m_endPtr</a> - <a class="code" href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">m_readPtr</a>;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> poyloadSize = 0;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        <span class="keywordflow">if</span>( rearLen &lt;= 2 ){</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                memcpy(&amp;poyloadSize, m_readPtr, rearLen);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                memcpy(&amp;poyloadSize + rearLen, <a class="code" href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">m_startPtr</a>,</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                                <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>) - rearLen);</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        }<span class="keywordflow">else</span>{</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                memcpy(&amp;poyloadSize, m_readPtr, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>));</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        }</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> dataSize = poyloadSize + 2;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="comment">//      DEBUG(0, [CyclicBufferController::readData], &quot;dataSize: &quot; &lt;&lt; dataSize)</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="comment">//      DEBUG(0, [CyclicBufferController::readData], &quot;rearLen: &quot; &lt;&lt; rearLen)</span></div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;        <span class="keywordflow">if</span>( rearLen &gt;= dataSize )</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        {</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;                memcpy(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>, m_readPtr, dataSize);</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                m_readPtr += dataSize;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        }<span class="keywordflow">else</span>{</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                memcpy(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>, m_readPtr, rearLen);</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                m_readPtr = <a class="code" href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">m_startPtr</a>;</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                memcpy(<a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a> + rearLen, m_readPtr, dataSize - rearLen);</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                m_readPtr += dataSize - rearLen;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        }</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        <a class="code" href="debug_8h.html#a4036580c4cea6cf404647d18f2fe3452">DEBUG</a>(1, <a class="code" href="class_cyclic_buffer_controller.html#a6008ed913714ccd961bd8206d152cae2">CyclicBufferController::readData</a>, <span class="stringliteral">&quot;leave...&quot;</span>)</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keywordflow">return</span>  <a class="code" href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">m_readBuf</a>;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;}</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div><div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="class_cyclic_buffer_controller.html#a15df81f47300dc02f6316b48d5fb9f14">  186</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_cyclic_buffer_controller.html#a15df81f47300dc02f6316b48d5fb9f14">CyclicBufferController::releaseBuf</a>()</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;{</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment">//      if(m_dataBuf)</span></div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="comment">//      {</span></div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="comment">//              free(m_dataBuf);</span></div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="comment">//              m_dataBuf = NULL;</span></div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="comment">//      }</span></div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;}</div><div class="ttc" id="class_cyclic_buffer_controller_html_ab674beb0bdec4270bf9a246e82d0ee11"><div class="ttname"><a href="class_cyclic_buffer_controller.html#ab674beb0bdec4270bf9a246e82d0ee11">CyclicBufferController::m_dataBuf</a></div><div class="ttdeci">char m_dataBuf[80960]</div><div class="ttdoc">data buffer to store data read from bus </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00037">CyclicBufferController.h:37</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a28586ac01f5bd99ecb8bdc20eb0a1760"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a28586ac01f5bd99ecb8bdc20eb0a1760">CyclicBufferController::m_readBuf</a></div><div class="ttdeci">char m_readBuf[20000]</div><div class="ttdoc">buffer used to store data read </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00057">CyclicBufferController.h:57</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_ad4f0789743dbcc35d67df9d8622e4f2a"><div class="ttname"><a href="class_cyclic_buffer_controller.html#ad4f0789743dbcc35d67df9d8622e4f2a">CyclicBufferController::m_readPtr</a></div><div class="ttdeci">char * m_readPtr</div><div class="ttdoc">pointer used to read data form buffer </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00045">CyclicBufferController.h:45</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a6008ed913714ccd961bd8206d152cae2"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a6008ed913714ccd961bd8206d152cae2">CyclicBufferController::readData</a></div><div class="ttdeci">char * readData()</div><div class="ttdoc">Read data form buffer, a packet one time. </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00141">CyclicBufferController.cpp:141</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a79cbb344fe0a76309520376cc382d509"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a79cbb344fe0a76309520376cc382d509">CyclicBufferController::m_endPtr</a></div><div class="ttdeci">char * m_endPtr</div><div class="ttdoc">end pointer of data buffer </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00041">CyclicBufferController.h:41</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_add639f0a5fe5c958ae8b08b5611b1c4c"><div class="ttname"><a href="class_cyclic_buffer_controller.html#add639f0a5fe5c958ae8b08b5611b1c4c">CyclicBufferController::writeData</a></div><div class="ttdeci">bool writeData(const char *writedData, unsigned int dataSize)</div><div class="ttdoc">Write data to data buffer. </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00089">CyclicBufferController.cpp:89</a></div></div>
<div class="ttc" id="debug_8h_html_a4036580c4cea6cf404647d18f2fe3452"><div class="ttname"><a href="debug_8h.html#a4036580c4cea6cf404647d18f2fe3452">DEBUG</a></div><div class="ttdeci">#define DEBUG(level, title, debuginfo)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00055">debug.h:55</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_acd80c8d3d61f215418010b5bedb871d3"><div class="ttname"><a href="class_cyclic_buffer_controller.html#acd80c8d3d61f215418010b5bedb871d3">CyclicBufferController::m_cycBufSize</a></div><div class="ttdeci">unsigned int m_cycBufSize</div><div class="ttdoc">size of cyclic buffer </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00062">CyclicBufferController.h:62</a></div></div>
<div class="ttc" id="_device_manager__server_8cpp_html_aba4334f5f818d11c0a025ccac667678a"><div class="ttname"><a href="_device_manager__server_8cpp.html#aba4334f5f818d11c0a025ccac667678a">assert</a></div><div class="ttdeci">assert(devmgrServant)</div><div class="ttdoc">obtain object reference of this service </div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a15df81f47300dc02f6316b48d5fb9f14"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a15df81f47300dc02f6316b48d5fb9f14">CyclicBufferController::releaseBuf</a></div><div class="ttdeci">void releaseBuf()</div><div class="ttdoc">Free the buffer memory. </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00186">CyclicBufferController.cpp:186</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a2db3ad4287240ffc52c0536c2589b9d1"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a2db3ad4287240ffc52c0536c2589b9d1">CyclicBufferController::CyclicBufferController</a></div><div class="ttdeci">CyclicBufferController()</div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00016">CyclicBufferController.cpp:16</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a9de1a35839af25576bfd5f3088242bff"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a9de1a35839af25576bfd5f3088242bff">CyclicBufferController::m_startPtr</a></div><div class="ttdeci">char * m_startPtr</div><div class="ttdoc">statr pointer of data buffer </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00049">CyclicBufferController.h:49</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a419f448d18c442430f798e0408e3894b"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a419f448d18c442430f798e0408e3894b">CyclicBufferController::getWritableSize</a></div><div class="ttdeci">unsigned int getWritableSize()</div><div class="ttdoc">Get size of remaining buffer which can be written data. </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00038">CyclicBufferController.cpp:38</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_acd7665ef52411a62d47cdde4639052b1"><div class="ttname"><a href="class_cyclic_buffer_controller.html#acd7665ef52411a62d47cdde4639052b1">CyclicBufferController::~CyclicBufferController</a></div><div class="ttdeci">virtual ~CyclicBufferController()</div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00027">CyclicBufferController.cpp:27</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_afa9a49f42ffeed0a49c75888c6269fa7"><div class="ttname"><a href="class_cyclic_buffer_controller.html#afa9a49f42ffeed0a49c75888c6269fa7">CyclicBufferController::m_writePtr</a></div><div class="ttdeci">char * m_writePtr</div><div class="ttdoc">pointer use to write data to buffer </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8h_source.html#l00053">CyclicBufferController.h:53</a></div></div>
<div class="ttc" id="class_cyclic_buffer_controller_html_a7e151b044dff0a4f4cedc0858c6fee2e"><div class="ttname"><a href="class_cyclic_buffer_controller.html#a7e151b044dff0a4f4cedc0858c6fee2e">CyclicBufferController::initializeDataBuf</a></div><div class="ttdeci">bool initializeDataBuf(unsigned int bufSize)</div><div class="ttdoc">Initialize data buffer, allocate memory which size is determined by input parameter. </div><div class="ttdef"><b>Definition:</b> <a href="_cyclic_buffer_controller_8cpp_source.html#l00054">CyclicBufferController.cpp:54</a></div></div>
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